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Reports cases when properties are accessed inappropriately:
<ul>
  <li>Read-only properties are set</li>
  <li>Write-only properties are read</li>
  <li>Non-deletable properties are deleted</li>
</ul>
<p><b>Example:</b></p>
<pre><code>
class MyClass:
    @property
    def read_only(self): return None

    def __write_only_setter(self, value): pass

    write_only = property(None, __write_only_setter)


a = MyClass()
a.read_only = 10 # property cannot be set
del a.read_only # property cannot be deleted
print(a.write_only) # property cannot be read
</code></pre>
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